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    <h2>IDL mode</h2>
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        <textarea id="code" name="code"> ;; Example IDL code FUNCTION mean_and_stddev,array ;; This program reads in an array of numbers ;; and returns a structure containing the ;; average and standard deviation ave = 0.0 count = 0.0 for i=0,N_ELEMENTS(array)-1 do begin ave = ave +
            array[i] count = count + 1 endfor ave = ave/count std = stddev(array) return, {average:ave,std:std} END </textarea>
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